I've updated to release 12 and I'm now getting this message: nglayout.initialpaint.delay isn't valid suggestions on how to fix it?

go to about: config and there was nothing there called: nglayout.initialpaint.delay

You have everything "speed up Firefox" Add-ons or extensions (check in tools > Add-ons). Often these types of extensions will change nglayout.initialpaint.delay and it can be screwed up.

Try to uninstall or disable these extensions. You may also have to reset all your prefs set by user:

  1. Go to help > restart with disabled modules
  2. In the dialog box that appears, select 'Reset all the preferences of the user by default in Firefox'
  3. Click "make changes and restart".

Tags: Firefox

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